Because of its sweetness, Yacon is considered a fruit. The root of yacon is considered the world's richest natural source of FOS (Fructooligosaccharides) and has low proportions of simple sugars (e.g. glucose, fructose and sucrose). While most other roots and tubers store carbohydrates as starch - a polymer chain of glucose - yacon stores carbohydrate as FOS - a polymer chain composed mainly of fructose. This FOS can be considered a subgroup of inulin because it has a similar molecular structure, but with shorter fructose chains.

The human body has no enzyme to hydrolyze FOS, so (even though it tastes sweet) it passes through the digestive tract unmetabolized, providing few calories, a marketing strength for dieters and diabetics. Yacon also acts as a prebiotic. The undigested portion of yacon serves as food for "friendly" bacteria, such as Bifidobacterium and Lactobacillus species, in the colon. Clinical studies have shown that administering FOS can increase the number of these friendly bacteria in the colon while simultaneously reducing the population of harmful bacteria.

Other benefits noted with FOS supplementation include increased production of beneficial short-chain fatty acids such as butyrate, increased absorption of calcium and magnesium, and improved elimination of toxic compounds. Preclinical studies indicate an increase in bone density after consumption of FOS. In addition, the beneficial effects of FOS on the presence of Bifidobacterium suggest an improved absorption of vitamins, such as those in the B complex.

The roots contain important quantities of potassium and antioxidants.

Yacon is a diet and a diabetic food

• Lowers blood sugar
• Controls weight
• Suppresses appetite
• Prevents and fights osteoporosis
• Prevents an controls hyperglycaemia (over activity)
• Laxative
• Promotes gut health
• Restores kidney activity
• Prevents colon cancer
• Antioxidant and much more…